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What is the xth triangular number?
The formula for the nth triangular number is n(n+1)/2. Therefore, the fourth triangular number is equal to 4 x (4+1) / 2 = (4 x 5) / 2 = 10. The fiftieth triangular number is equal to 50 x (50+1) / 2 = (50 x 51) / 2 = 1275.
Is 9 a triangular number?
yes it is!EDIT: No, it is not.
What is the 4 triangular number?
It is 1+2+3+4 = 10.
Is 63 a Triangular Number?
Is 63 a triangular number I think it is a triangular number.
What is a number that is a triangular number and a triangular number?
013
What are the names of the faces and the number of a triangular pyramid?
There are 4 triangular faces. They do not have names.
What is the xth triangular number?
The formula for the nth triangular number is n(n+1)/2. Therefore, the fourth triangular number is equal to 4 x (4+1) / 2 = (4 x 5) / 2 = 10. The fiftieth triangular number is equal to 50 x (50+1) / 2 = (50 x 51) / 2 = 1275.
What is the number of sides of a base for a triangular prism?
4
What do you notice about the number of sides on the base and the number of triangular faces?
Nothing much. A base of a cuboid has 4 sides and there are no triangular faces.
Is 9 a triangular number?
yes it is!EDIT: No, it is not.
What is the 4 triangular number?
It is 1+2+3+4 = 10.
Is 63 a Triangular Number?
Is 63 a triangular number I think it is a triangular number.
What is a number that is a triangular number and a triangular number?
013
Is 100 a triangular number?
no it is not a triangular number
Is 150 a triangular number?
Decimal triangular number it is
What is the number of edges of the triangular pyramid?
The number of edges of the triangular pyramid is eight but the number of faces is five.* * * * *Even though put in italics, the answer is wrong. It would have been correct for a square or rectangle based pyramid but NOT a triangular pyramid. The latter has 6 edges (and 4 triangular faces).
Is 36 a triangular number?
36 is a triangular number, Square number and also a Consecutive number.
